32213664 has 216 divisors, whose sum is σ = 114135840. Its totient is φ = 8418816.

The previous prime is 32213653. The next prime is 32213669. The reversal of 32213664 is 46631223.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (32213669) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1110802 + ... + 1110830.

Almost surely, 2^32213664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32213664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57067920).

32213664 is an abundant number, since it is smaller than the sum of its proper divisors (81922176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32213664 is a wasteful number, since it uses less digits than its factorization.

32213664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 60 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 32213664 is about 5675.7082377444. The cubic root of 32213664 is about 318.1852486557.

Adding to 32213664 its reverse (46631223), we get a palindrome (78844887).

The spelling of 32213664 in words is "thirty-two million, two hundred thirteen thousand, six hundred sixty-four".